Water heating coil



Oct. 26, 1937. J. T. coATEs WATER HEATING CQIL Filed Sept. ll, 1936 IIIIIIIIIIEII IIIIII 'lli Il! INVENTOR HIS ATTORNEYS Patented Oct. 26, 1937 iJNlTED STATES gowns? PATENT 'ortica 4 Claims.

My invention relates to domestic boilers and furnaces, and has among its objects and advantages the provision of an improved Water heater.

An object of my invention is to provide a 5 water heating coil which may be associated with conventional boilers and furnaces and in which means is provided whereby the water heating coil may be adjusted to various positions within the combustion chamber.

1G In the accompanying drawing:

Fig. l is a diagrammatic View of a conventional furnace showing my invention applied thereto;

Fig. 2 is a sectional view of the water coil taken along the line 2-2 of Fig. l;

Fig. 3 is a sectional View along the line 3-3 of Fig. 2; and

Fig. 4 is a sectional view along the line 4-4 of Fig. 2.

In the embodiment selected to illustrate my invention, I make use of a furnace I0 including the usual combustion chamber I2 and a wall I4. To the wall I4 I connect my hot water coil I6 through the medium of a joint I8 which permits universal adjustment of the coil I6. The coil may be raised or lowered with respect to a lire bed 26, or shifted laterally with respect to the combustion chamber I2. With a small fire in the furnace, the coil may be lowered into close proximity with the lire for heating purposes.

When a large re is carried in the furnace, the coil may be raised to prevent excess heating. With the lire carried to one side of the furnace, the coil may be swung laterally into proper heat transfer relation with the localized re.

Speciically, the coil I6 comprises a hollow ball 22 having tubular extensions 24 and 26 communicating therewith. The cold water inlet conduit 28 is connected with the extension 24, while the hot water outlet conduit 30 is connected with the extension 26. A tubular extension 32 is carried by the ball 22 and is provided with a partition 34 which terminates short of the free end of the extension. I arrange the partition 34 to extend through the ball 22. Thus, the cold water will enter the ball on one side of the partition 34 and flow toward the free end of the coil. The hot water flows back on the other side of the partition 34 to the conduit 36. I prefer to make the conduits 23 and 30 of a flexible nature for connection with the pipes 36 and 38, which are respectively connected with the conduits 28 and 3B. The tubular member 32 may be provided with iins 40 to increase the heating eiiiciency of the coil.

5 Bau 22 is rotatably mounted on the wall I4.

'Ihis wall is provided with an opening 42 slightly larger in diameter than the ball 22. To the wall I4 adjacent the opening 42, I weld two rings 44. Ball retaining rings 46 and 48 are mounted on supporting bolts 56 which pass through aligned 5 openings in all the rings and the wall i4, and have threaded relation with the ring 44. Four such bolts are illustrated.

The openings 52 in the rings 46 and 48 are slightly smaller in diameter than the ball 22, and 10 the edges of the rings defining the openings are shaped to conform to the spherical contour of the ball. Upon the bolts 50 I mount compression springs 54 which abut the ring 52 and the nuts 56 upon the bolts. The opening 52 in the 15 ring 46 is of such diameter as to hold the ring in slightly spaced relation with the ring 44. Thus, the springs 54 hold the rings 46 and 48 firmly against the ball 22. The pressure relation between the rings 46 and 48 and the ball 22 20 is such as to permit the ball to be easily rotated for adjusting the coil i6. When adjusted, the frictional relation between the rings 46 and 48 and the ball 22 is suiiicient to support the coil in its adjusted position. 25

In furnaces embodying a second shell 58, the shell may be provided with a large opening 60 to accommodate the extensions 24 and 26 when adjusting the coil I6. Because of the springs 46 and the spaced relation between the rings 46 30 and 44, compensation for wear is provided so that the coil I6 will be effectively supported at all times. I prefer to bend the coil I6, as at 62, whereby the reach 64 will conform more closely to the horizontal when the coil is tilted 30 into close relation with the furnace grate.

Without further elaboration, the foregoing will so fully explain my invention that others may, by applying current knowledge, readily adapt the same for use under various conditions of 40 service.

I claim:

1. In a furnace having a combustion chamber and a wall structure having an aperture, a hot Water coil positioned inside the combustion 45 chamber and extending through the aperture, said coil being provided with a ball and having inlet and outlet ducts passing through the ball, and means connected with the wall structure for rotatably supporting said ball within said aperture, to permit universal adjustment of the hot water coil within the combustion chamber.

2. In a, furnace including a combustion chamber and a wall structure having an aperture, a

not water ooit positioned inside the combustion chamber and extending through the aperture, said hot Water coil being provided with a ball and having inlet and outlet ducts passing through the ball, ball supporting plates carried by said Wall structure, said ball being movably related to said ball supporting plates, and resilient means for urging the plates into frictional relation With the ball, to hold the same in various adjusted positions.

3. In a furnace, a wall including an` opening, a hot Water coil extending through said opening and including a ball, said coil having inlet and outlet ducts passing through the ball, a pair of plates having openings smaller than the diameter of the ball for frictionally supporting the JOHN T. COATES. 

